Some folders not loading with email, but email is in the Outlook Web app.

I’m just testing the free version before I buy, but…

Some of my email folders should have an Inbox (as in, connected email addresses) but the Inbox is not displayed.  The folder shown is not loading with email.

What am I overlooking?
The setup was automatic, one Microsoft account.  These folders and contents are shown in other email clients…

No reply?
Wow is this a bug?